THE ULTRA-CUSTOM
Unfilled Multi-Weight Sandbag
Never have the same workout twice (because what’s the fun in that?) with our multi-functional, adjustable, exercise sandbag that you can custom-fill in seconds.
Complete with four inserts, you can load them up with whatever you have on hand — sand, gravel, water bottles—the limit is your imagination. Instantly add and remove weight to your functional fitness workout to build strength, challenge your balance, and work every muscle.
Oh, and did we mention it’s travel friendly too? Roll it up, chuck it in your suitcase, and get a full-on gym set-up in seconds – wherever you are in the world.
£119.99
Features
Fill with sand, gravel, or even your trusty water bottle, for an ultra-custom weight - without the faff - so you can switch up your weight mid-workout for an intensity that works for you.
Multi-functional design:
One bag, endless exercises. Squat with it, carry it, swing it—this sandbag is designed for full-body workouts. Why clutter your space with multiple pieces of kit when our innovative bag does it all?
Ultra durable and indestructible:
Built from a military-grade Cordura-600D with double stitching, this exercise sandbag is tough enough for the hardest workouts. It’s the life-long training partner you’ve always wanted.
Spec + Material
Capacity: Adjustable weight capacity, we recommend up to 25kg.
Weight (empty): 1.3kg.
Includes inserts: 4 unfilled inserts included.
4 x zipped compartments: That keeps your chosen weights secure and safe.
Made in the UK: Proudly manufactured for quality and durability.
Machine washable: Chuck in the wash (yes, really).
7 handles: From extra long wide handles to lift from the floor to shoulder straps for carrying, you can do everything on your functional fitness workout plan in one place.
Velcro straps: 36cm x 5cm
OUR BIG FAT DISCLAIMER - listen in
Please Note: This multi-weight exercise sandbag isn’t pre-filled and weighted. If you’re looking for a weighted all-in-one, check out our Pre-filled multi-weight exercise sandbag.
Returns + Shipping
For international delivery charges, visit our shipping and returns policy page.
Our Guarantee
(We’ve never had one sent back to us. Just saying.)
Let’s uncomplicate your workout, shall we?
Roll it up or keep it flat
Hide it under the sofa/bed/stairs without breaking a sweat
Grab a rock, or 10
Fill it with whatever you can get your hands on (sand, gravel, your water bottle) – with a max load of 24kg.
Squat. Swing. Sprint.
Whatever’s on your functional fitness plan, our all-in-one bag pushes you further.
Unbreakable, unlike your PB
Our life-long warranty means you can go as hard as you want, without ripping a stitch
Military-grade spec
Tested by the army on the daily, (over 800+ being used & growing) our bag is battle-tested.
Custom weight for strength, balance, and beyond
Load it up to a weight that works for you and strip it back out, all in a matter of seconds (and a few zips).
Meet the multi-functional hero saving you from boringrinse-and-repeat workouts
Single grip for stability
For core-strengthening exercises reach for these — best for suitcase squats and farmers carries
Narrow grip for arm gains
Get precise with your bicep curls and overhead tricep extensions for targeted arm workouts
Medium grip to squat it like its hot
Use these won’t-budge handles on your shoulders during lower-body moves like squats and lunges
Wide grip for added control
800+ (and counting!) on the field.
Born on the battlefield, built for you. Our military-grade design was created by veterans to make your functional fitness training tough, adaptable, and built to last. Whether you’re training in front of the telly or pushing it outdoors in rough terrain, our bag has got you covered.
The55 fitness sandbag FAQs.
What is the maximum weight of an unfilled sandbag?
We recommend filling up to 25kg – so take extra care not to overfill it when adding your own weight.
How much does the55 sandbag weigh when empty?
1.3kg
Can I put sand/stones straight into the bag?
Yes, you can, but nothing with sharp edges. We’d always recommend using the 4 ready-to-fill inserts supplied with your sandbag to keep things cleaner (do you really want to chuck a load of sand in your washing machine?).
Does the unfilled sandbag come filled with sand?
This is a hard no! But to be super clear – the unfilled sandbag isn’t filled with weight out of the box. Instead they arrive with 4 x ready-to-fill inserts so you can fill them up to your chosen weight, using whatever you have to hand from sand to water bottles.
Which multi-weight bag is right for me?
It really depends on your ability and how custom you want the weight to be. To workout with lighter weights, go for the unfilled bag to load it up with whatever you have to hand. For an all-in-one, ready-to-lift solution – go for the pre-filled sandbag where we’ve done the work for you (the workout, we leave to you!).
What exercises can I do with a sandbag fitness bag?
We might be here a while. OK, strap in: squats, deadlifts, swings, pulls, pushes, burpees, walking, sprinting… we know the possibilities can feel infinite, which is why we’ve got handy workouts over on our blog. Or sign up to our newsletter for fresh, new workout inspo, delivered weekly.
Do you offer international shipping for all orders?
Do you offer free UK shipping?
We offer free UK delivery. No minimum spend.
What’s your international returns policy?
For details on returns, head to our shipping and returns page here
Are the55 sandbags good for building muscle?
We don’t call it an all-in-one for nothing. Whatever your fitness goal—toning, strengthening, or muscle-building—our sandbag was designed to give you a full-body workout. It’s a gym in a bag. For workout inspo, check out our blog.
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Unfilled Sandbag Inserts
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